Abstract: The slope angle of a blade on an earthmoving machine is automatically controlled based on measurements from a three-axis gyroscope, a blade slope angle tilt sensor, and a blade tip angle tilt sensor mounted on the blade. A three-axis gyroscope has high dynamic response and high resistance to mechanical disturbances but is subject to potentially unbounded errors. A tilt sensor has bounded errors but has a slow dynamic response and a high sensitivity to mechanical disturbances. The combination of a three-axis gyroscope and two tilt sensors provides an advantageous measurement system. Algorithms for performing proper fusion of the measurements account for the lack of synchronization between the three-axis gyroscope and the tilt sensors and also screen out invalid measurements from the tilt sensors. The blade slope angle is controlled based on a reference blade slope angle and an estimate of the blade slope angle computed from properly fused measurements.

Abstract: An improved multi drill cultivator which mainly consists of octagonal central drum (2), gear housing Assembly which further comprise of four big gears, four bevel gears and cover (3.i), teeth for big gears, chassis, drill Ploughing Assembly further comprises of projected portion and drills, bearing housing further comprises of bearing and collar for bearing, rear wheel Assembly further comprises of rear wheel and rear wheel axle, front wheel assembly further comprise of front wheel and front wheel bracket, front wheel bracket hub, one end of front wheel, other end of front wheel bracket, lock nut, A jack screw mechanism consists of lifting screw steering wheel, a guide bar being attached to the lifting screw steering wheel, drum lifting block and a ball wherein the said ball is fixed into the locking for ball, provided at the end of the said jack screw mechanism assembly.

Abstract: A walk aerator comprises a frame supported by a plurality of ground engaging wheels, the frame carrying a coring head having a plurality of side-by-side tine assemblies. The wheels define a wheelbase which is substantially equal to or less than the width of a coring swath and the wheels are located in advance of the coring head to keep the wheels from passing over the holes or soil cores left in any preceding coring swathes formed by the aerator. The vertical position of the coring head is adjustable up and down as the ground contour changes to keep hole depth substantially constant. The tine assemblies are reciprocated by a single crankshaft driven by a single pulley, the crankshaft being assembled from multiple crank arms that are splined and bolted together. Sealed bearings connect drive arms that drive the tine assemblies to the crankshaft. The crankshaft can be disassembled to allow the sealed drive arm bearings to be replaced. Integral core deflectors are used on the drive arms.

Abstract: The invention relates to a machine for displacing grindstones with a milling cutter (28, 30). The inventive machine is laterally guided along a grindstone, in a displacement direction, and removes a layer of material from the grindstone through milling every time it passes the grindstone. The material removed by milling drops upon a conveying device (88) used to deposit the material in an area offset from the milled grindstone. The milling cutter has two side rotating milling heads whose rotation axis extends substantially in the displacement direction or forms an acute angle relative to the displacement direction.

Abstract: A second hayrake hitch for use with a tractor is disclosed. The hayrake hitch includes a generally U-shaped main frame of size and height to overfit a forward hayrake which is directly connected to the tractor. The main frame includes a main beam and a wheeled rear support bar which is pivotally interconnected relative to the main beam. A second hayrake is connected to a hitch bar secured to the rear support bar to enable the tractor to simultaneously pull the two hayrakes. A hydraulic cylinder extends between the rear support bar and a leg connected to the main beam and hydraulic lines interconnect the cylinder with the hydraulic coupling of the tractor. By hydraulically functioning the cylinder while the tractor is moving, the rear support bar can be pivoted relative to the axis of the main beam to thereby move the rear hayrake to the right or to the left relative to the front hayrake to simultaneously rake two hay windrows or one large combined windrow.

Abstract: An agricultural machine for smoothing ruts, such as are produced in a field by center pivot sprinkler irrigation systems, comprises a pair of rotary tillers arranged in a unique frame for traveling over and along respectively opposite sides of the rut as such tillers are rotated toward each other to break up clods of soil ridged above the rut at opposite sides thereof and to largely fill and smooth the rut. A guide shoe carried by the frame midway between the rotary tillers is preferably provided to travel along the rut and maintain the rotary tillers at proper working positions, and a hood with outriggered side walls hinged thereto for outward swinging movement preferably covers the rotary tillers.

Abstract: This invention relates to an auger and to a plow including such auger. This specification discloses an auger which is suitable for use even in the difficult terrain encountered in typical reforestation operations. An auger in accordance with this disclosure has its axis extending in the direction of movement of the plow and is arranged to rotate in a direction opposing the forward movement of the plow. The auger has a plurality of generally helical turns. Sections of the ground engaging portions around the periphery of the turns have an angle of attack in a plane at a selected angle to the axis of the auger and other sections have angles of attack in planes at a different angle. These ground engaging sections of the periphery are preferably teeth which because of the difference in angles discussed above attack the ground at different cutting angles.

Abstract: A cultivating machine (FIG. 1) having a frame (1) for mounting of the machine on a tractor, and having arms (34) on which angle drives (6) for the cultivating tools (26) are mounted, resiliently joined thereto by way of arms (29) and connectors (33, 35, 36). A transverse shaft (7), by way of bevel gears, drives the tool holders (24) for rotation of the tools (26). The transverse shaft directly drives output shafts to which the tool holders are connected.

Abstract: This tines assembly is for attachment to a drive shaft and includes a front shaft portion, a rear shaft portion connected between the front shaft portion and the drive shaft, and front and rear tines mounted in removable relation to the rear shaft portion. The front tines, front shaft and rear shaft are connected and located by a pin, and the rear tines, rear shaft and drive shaft are connected and located by a pin.

Abstract: This cultivator includes a base, which is carried by a pair of ground wheels, and a motor mounted to the base above a pair of auger assemblies. The motor shaft extends rearwardly of the base and the auger assemblies include elongate shafts rotatively mounted within sleeves attached to the base. The motor shaft and the auger shafts are connected at their rear ends by a chain and sprocket drive assembly which provides counter-rotational motion in the two auger shafts. The forward ends of the auger shafts are each provided with a screw and spaced radial tines of progressively increasing length.